PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 6504022-3 1984 Studies on the kinetic properties of the enzymes with thymidine and ATP as the substrates and dTTP as the inhibitor showed clear differences between TK 1 and TK 2, but a close similarity between TK 2 and TK 2N. Adenosine Triphosphate 68-71 thymidine kinase 2 Homo sapiens 158-162 6504022-3 1984 Studies on the kinetic properties of the enzymes with thymidine and ATP as the substrates and dTTP as the inhibitor showed clear differences between TK 1 and TK 2, but a close similarity between TK 2 and TK 2N. Adenosine Triphosphate 68-71 thymidine kinase 2 Homo sapiens 195-199 6504022-5 1984 With ATP as the variable substrate, all three enzymes showed positive cooperative kinetics, but TK 2 and TK 2N lost the cooperativity in the presence of dTTP. Adenosine Triphosphate 5-8 thymidine kinase 2 Homo sapiens 96-100 19233899-3 2009 The 3"-C-branched p-methylphenyl (compound 1) and 3-CF(3)-4-Cl-phenyl (compound 7) thiourea derivatives of beta-dThd showed competitive inhibition of TK-2 when dThd was used as the variable substrate (K(i) values, 0.40 and 0.05 microM, respectively), but uncompetitive inhibition in the presence of variable concentrations of ATP (K(i) values, 15 and 2.0 microM, respectively). Adenosine Triphosphate 326-329 thymidine kinase 2 Homo sapiens 150-154 31459030-6 2018 The phosphate donor adenosine triphosphate (ATP) did not bind to either dTTP-bound or dTTP-free enzymes but bound tightly to the dT- or dC-TK2 complexes with large differences in enthalpy and entropy changes, strongly suggesting an ordered binding of the substrates and different conformational states of the ATP and dT- and dC-TK2 ternary complexes. Adenosine Triphosphate 20-42 thymidine kinase 2 Homo sapiens 139-142 31459030-6 2018 The phosphate donor adenosine triphosphate (ATP) did not bind to either dTTP-bound or dTTP-free enzymes but bound tightly to the dT- or dC-TK2 complexes with large differences in enthalpy and entropy changes, strongly suggesting an ordered binding of the substrates and different conformational states of the ATP and dT- and dC-TK2 ternary complexes. Adenosine Triphosphate 20-42 thymidine kinase 2 Homo sapiens 328-331 31459030-6 2018 The phosphate donor adenosine triphosphate (ATP) did not bind to either dTTP-bound or dTTP-free enzymes but bound tightly to the dT- or dC-TK2 complexes with large differences in enthalpy and entropy changes, strongly suggesting an ordered binding of the substrates and different conformational states of the ATP and dT- and dC-TK2 ternary complexes. Adenosine Triphosphate 44-47 thymidine kinase 2 Homo sapiens 139-142 31459030-6 2018 The phosphate donor adenosine triphosphate (ATP) did not bind to either dTTP-bound or dTTP-free enzymes but bound tightly to the dT- or dC-TK2 complexes with large differences in enthalpy and entropy changes, strongly suggesting an ordered binding of the substrates and different conformational states of the ATP and dT- and dC-TK2 ternary complexes. Adenosine Triphosphate 44-47 thymidine kinase 2 Homo sapiens 328-331 20218622-5 2010 This behavior is rationalized by suggesting that the inhibitors occupy the substrate-binding site in a TK-2-ATP complex that maintains the enzyme"s active site in a closed conformation through the stabilization of a small lid domain. Adenosine Triphosphate 108-111 thymidine kinase 2 Homo sapiens 103-107 19233899-4 2009 These kinetic properties of compounds 1 and 7 against TK-2 could be accounted for by molecular modeling showing that two hydrogen bonds can be formed between the thiourea nitrogens of compound 7 and the oxygens of the gamma-phosphate of ATP. Adenosine Triphosphate 237-240 thymidine kinase 2 Homo sapiens 54-58 16305527-1 2005 Mitochondrial thymidine kinase or TK-2 belongs to the family of mammalian deoxynucleoside kinases (dNKs) that catalyze the phosphorylation of deoxynucleosides to their corresponding deoxynucleoside monophosphates by gamma-phosphoryl transfer of ATP. Adenosine Triphosphate 245-248 thymidine kinase 2 Homo sapiens 34-38 18459168-1 2008 Human mitochondrial thymidine kinase (TK2) is a pyrimidine deoxynucleoside kinase (dNK) that catalyzes the phosphorylation of pyrimidine deoxynucleosides to their corresponding deoxynucleoside 5"-monophosphates by gamma-phosphoryl transfer from ATP. Adenosine Triphosphate 245-248 thymidine kinase 2 Homo sapiens 38-41 11266658-6 2001 However, 2"-O-acyl-BVaraU was extremely poorly converted to the corresponding arabinosyl nucleoside 5"-monophosphate by TK-2 as revealed by [gamma-(32)P]phosphate transfer studies from [gamma-(32)P]ATP. Adenosine Triphosphate 198-201 thymidine kinase 2 Homo sapiens 120-124 14690426-9 2003 Molecular docking experiments with a modeled hTK2 three-dimensional structure accurately predicted the binding positions at the active site of the natural substrates (dThd, dCyd, and ATP) and inhibitors (dTTP and dCTP), with highly conserved orientations obtained for all ligands. Adenosine Triphosphate 183-186 thymidine kinase 2 Homo sapiens 45-49 1433372-8 1992 Calculations of the percent of TK activity in the presence of ATP or CTP showed that this elevation was due to increased TK1 isozyme levels. Adenosine Triphosphate 62-65 thymidine kinase 2 Homo sapiens 31-33 1433372-6 1992 By calculating the percent of TK activity in the presence of adenosine triphosphate (ATP) or cytidine triphosphate (CTP), we estimated the relative contributions of TK isozymes TK1 and TK2 to total TK activity. Adenosine Triphosphate 61-83 thymidine kinase 2 Homo sapiens 30-32 1433372-10 1992 ER- patients with recurrence had significantly (P < .001) elevated total tumor TK levels compared with levels in those who did not have recurrence, and calculation of percent of TK activity with ATP or CTP indicated elevated TK1 levels. Adenosine Triphosphate 198-201 thymidine kinase 2 Homo sapiens 181-183 1433372-6 1992 By calculating the percent of TK activity in the presence of adenosine triphosphate (ATP) or cytidine triphosphate (CTP), we estimated the relative contributions of TK isozymes TK1 and TK2 to total TK activity. Adenosine Triphosphate 85-88 thymidine kinase 2 Homo sapiens 30-32 34758700-0 2022 Mutational analyses of human thymidine kinase 2 reveal key residues in ATP-Mg2+ binding and catalysis. Adenosine Triphosphate 71-74 thymidine kinase 2 Homo sapiens 29-47 34758700-4 2022 We showed that mutations of Gln-110 and Glu-133 affected Mg2+ and ATP binding, and thus are crucial for TK2 function. Adenosine Triphosphate 66-69 thymidine kinase 2 Homo sapiens 104-107